It’s industrial grade ceramic coating. Different from the stuff you put on the exterior of the car. As we know from prior generations, Toyota’s frames are notorious for rusting out. Main thing is you do something. Obviously the stock undercoating is insufficient for Pacific Northwest nonstop rain and now salted roads as of 2017.I'm having a hard time believing ceramic undercoating will last ten years..
I'm probably going to go with Woolwax, hopefully before December rolls around.
You guys that are doing this yourself, are you jacking your car up or can you get underneath freely ?
At the age of 58 and with a stone driveway I'm not sure crawling around underneath there is something that sounds like fun.